Big Cheese, you will enjoy it. The expression, can't take a joke, shouldn't have joined, is as good as ever.
You will enjoy digging a slit trench and lying in cold damp earth etc (or hot warm sand or whatever) and all grown up boys stuff.
Some things will annoy you, some things you will relish. How about Scuba diving on an atoll in the Indian Ocean at Betty's expense? Above all you will enjoy being responsible for a disparate bunch of individuals, looking to their welfare and encouraging them on the path tolife long learning.
You will feel great satisfaction as they earn promotion, get commissioned, improve their education etc all thanks to your encouragement. Utrinque Apparatus joined a 'real regiment' but your gunners are different from soldiers in a 'real regiment'.